A hedgehog rolls itself up into a ball in a garden outside Moscow on September 20, 2017. (Photo by Yuri Kadobnov/AFP Photo)

A little red flying fox dips a toe in a lake at the mouth of Katherine gorge in the Northern Territory, Nitmiluk national park, Australia on September 20, 2017. (Photo by Glenn Campbell/AAP)

In this photo taken on September 17, 2017, a macaque monkey looks on in its enclosure at the Beijing Wildlife Park. (Photo by Fred Dufour/AFP Photo)

A stag reaches for the branches of a tree in Ripon, England on September 18, 2017. (Photo by Charlotte Graham/Rex Features/Shutterstock)

A ruddy shelduck and a flock of barhead geese fly over a wetland in Nyima County, southwest China's Tibet Autonomous Region, September 19, 2017. Changtang National Nature Reserve is a wildlife paradise and home to a variety of wildlife species such as Tibetan antelopes, wild yaks, Tibetan wild donkeys and black-necked cranes. (Photo by Zhang Rufeng/Xinhua/Barcroft Images)

Alba, an albino orangutan, snacks on a watermelon at the orangutan rehabilitation centre in central Kalimantan, Indonesia. The conservation group wants to create a 12-acre forest island for the world’s only known albino orangutan after rescuing it from villagers five months ago. Alba can’t be returned to the wild because of health issues related to her albinism. (Photo by AP Photo)

A Portuguese man o’ war washed up on Fistral beach in Cornwall, England on September 17, 2017. (Photo by Graham Stone/Rex Features/Shutterstock)

Pigeons bathe in a fountain in central Kiev, Ukraine September 19, 2017. (Photo by Gleb Garanich/Reuters)

A handout photo taken on September 21, 2017 and received on September 22 from the Queensland Police Service shows a 5.2- metre male crocodile that was found in a creek along the Fitzroy River near Rockhampton with a single gunshot wound to the head. There are concerns the shooting death of the crocodile will create a power vacuum in the local population – with warnings younger crocs will become increasingly aggressive as they fight for the position left vacant. (Photo by AFP Photo/Stringer)

A handout photo taken on September 21, 2017 and received on September 22 from the Queensland Police Service shows a 5.2- metre male crocodile that was found in a creek along the Fitzroy River near Rockhampton with a single gunshot wound to the head. (Photo by AFP Photo/Stringer)

A handout photo taken on September 21, 2017 and received on September 22 from the Queensland Police Service shows a 5.2- metre male crocodile that was found in a creek along the Fitzroy River near Rockhampton with a single gunshot wound to the head. (Photo by AFP Photo/Stringer)